[Automated processing of flight telegrams in civil air traffic control automation system] Air traffic control telegrams

Abstract: With the continuous development of my country's aviation industry, the scale of major airlines is also constantly expanding. In the continuous expansion, they need to continuously improve their own management services and management levels. At the same time, Also note the timely updates of equipment. For the aviation field, the transmission of information is crucial, and how to carry out high-precision information transmission has become the primary obstacle to the development of various airlines. The flight telegram processing system in the civil air traffic control system will be introduced in detail, and the shortcomings in the system will be solved to improve the processing efficiency of flight telegrams.

Keywords: civil air traffic control; automation system; flight telegraph; automated processing

CLC number: V355 Document identification code: A Article number: 1671-7597 (2012) 0720027 -01

0 Introduction

The booming development of my country's civil aviation industry has brought new hope to my country's transportation industry, but behind the prosperity, there are different kinds of troubles. The linear increase in air traffic has put heavy pressure on ground traffic control departments, especially the communication between pilots and the ground during flight, which has brought new problems to managers. In order to solve this problem and adapt information transmission to the increasing air traffic, it is necessary to use advanced computer instruments and some advanced innovative concepts. At the same time, operators need to have sufficient operating experience and familiarity with the equipment. Only in this way can automatic processing of data transmission be guaranteed.

1 Civil Air Traffic Control Processing System

Similar to the ground transportation system, aircraft navigation also needs to arrange time and flight sequence, so as to ensure the effective operation of the route and avoid aircraft and Accidents occur between aircraft and between aircraft and structures on the ground. At the same time, compared with the ground transportation system, the time planning requirements for aircraft navigation are more stringent. When summarizing the flight plan, the aircraft must fly according to the designated route, and at the same time, it must enter a specific navigation station according to the prescribed time. The altitude and flight speed must be within a certain range to reduce the possibility of accidents as much as possible. At the same time, aircraft navigation also has fixed flight numbers and transfer stations. At the same time, the weather conditions of each transfer station must be taken into consideration. When encountering abnormal weather, the flight plan must be temporarily changed. All the above elements are the daily work of civil air traffic control system staff. It is not enough to just rely on manpower to solve these problems. Certain computer equipment must be used for programming so that the computer can automatically complete these tasks.

2 Automated processing system

This system can automatically collect navigation telegrams and weather conditions from various domestic and international airports, and then store these statistical results in categories. , printing, display and other comprehensive processing work. More importantly, the system can arrange the flight plan for the next day based on these data, print the flight plan into a notice, and send it to the relevant departments, and the flight status can also be transmitted to the team leader's duty room in the form of a terminal at any time. As well as some meteorological, fleet, communications and other departments. The use of this system has greatly reduced the workload of staff, while also improving work efficiency and reducing the probability of errors in work.

The first is to grasp the flight dynamics. Flight status will be temporarily generated at a fixed time every morning based on the previous day's plan. If weather conditions are not conducive to flying, the system will cancel the corresponding flight. In the flight status display, staff can have a clear understanding of the day's flight departures, flight numbers and landing times. The staff only need to input the flight time and the reason code for flight cancellation into the system, and the system will automatically compile and issue the report, and make a plan form and save it into the system. If there are some emergencies, the staff can make simple modifications based on the actual emergencies, such as temporarily adding flights or making an emergency landing, and the system will also record these situations.

3 Automated processing of flight telegrams

Telegrams are received and processed in real time. In the civil aviation system, telegrams from different departments can be classified into various forms according to different types. Mainly include dispatch documents from various places, special approval documents from the General Administration, weather conditions received, navigation conditions, etc. Among these telegram types, the special approval documents of the General Administration are saved with UO, XX or B.B file names, while other types of telegram systems may be automatically processed.

In daily work, if there is a flight landing situation related to this airport, the system will remind the staff and print the corresponding progress sheet. If the aircraft number needs to be changed, the system will change it. However, if the flight does not have a fixed flight number, the ground staff will automatically fill in the corresponding flight number after receiving the signal of the flight taking off or landing. When the system receives an instruction to make a plan report, the system can make a plan based on the flight conditions of the day and comprehensive analysis of the local and destination weather conditions.

When various civil aviation systems are connected to the Internet, the system will automatically connect to the remote network, obtain the local airport weather conditions, and arrange the flight plan for the next day.

In these tasks, the only thing the staff needs to do is to enter instructions to make the operating system work automatically.

At work, if a takeoff report related to this airport is received, the system will prompt the staff with the flight's takeoff time and destination landing time, and automatically make adjustments based on the actual flight conditions. For reporting, the system also has the function of automatically answering requests for planned reports and dynamic reporting instructions. For example, if a place needs to know the capital's planning report, but the capital airport has not issued one, the system will automatically find the adjacent airport to request it. When the request is successful, the system will prompt accordingly.

In addition to the above, the system also provides powerful editing and review functions, command and deployment reminders, finished product generation and printing, and some auxiliary functions. Among these functions, staff generally need to perform certain management and operations, and then the operators can select, edit or modify according to the corresponding actual situation. If the airport needs it, the following items can be added based on the actual situation, including statistics on flight regularity rates, a list of aircraft route guarantees, and an aircraft parking registration form, etc.

4 The working principle of automatic telegram processing

For such a large-scale system, based on the current network communication habits, more than four computers are generally required to work at the same time, and the software requires It is DOS5.0 or above, and also requires VISUAL BASIC FOR WINDOWS and other related application assembly software.

In the daily work of the system, the first step is to realize automatic communication between airports. This work not only has strict requirements for hardware interface design, but also requires conversion between five-unit codes and ASCII codes. When designing a communication program, it is necessary to program the 8250 of the serial port and also implement The first terminal receives data in real time, thereby improving processing efficiency. Secondly, the message grouping logical identification method must be applied. The principle of this method is that when receiving telegrams in real time, the received messages need to be formatted and divided into different groups. The front and back of each group represent different meanings. Root

< p>According to the relationship between adjacent groups, we will solve the problems of changing words and not reporting according to regulations one by one. Different types of telegrams are processed in different ways, and the processing of telegrams needs to be completed by their respective processing program modules. After the system has completed the automated processing of all telegrams, it needs to summarize the tasks actually completed during the work, conduct comprehensive analysis through certain software, and present them in the form of reports.

When processing reports, the first thing to do is to solve the problem of memory overhead. Since the code of this kind of software is relatively large, in order to reserve as much conventional memory as possible, the Chinese character display font library needs to be expanded to a certain extent, and easy mistakes must be solved in advance. In order to improve the operating efficiency as much as possible, the system needs to use a higher version of DOS to provide corresponding acceleration technology to ensure the working efficiency of the system.

5 Conclusion

This automated telegram processing method is the most important task in the civil aviation system. Its working ability is directly related to the flight status and flight efficiency of the civil aviation system. The economy among them The value is immeasurable. Through a large number of practical investigations, we found that this automated telegram processing method has good market prospects and can be promoted and used on a large scale. Not only is the cost relatively low, it also greatly reduces the work intensity of staff, reduces human work errors, improves work efficiency, and ensures the safety of major airlines' flights and the timeliness of flights.

References:

[1] Huang Deshuang, Neural Network Pattern Recognition System Theory [M]. Beijing: Electronic Industry Press, 1996.

[2 ] Jiao Licheng, Application and Implementation of Neural Networks [M]. Xi'an: Xi'an University of Electronic Science and Technology Press, 1993.

[3] Zhang Naiyao, Yan Pingfan, Neural Networks and Fuzzy Control [M]. Beijing: Tsinghua University Press, 1998.

[4] Chen Nianyi, Pattern recognition optimization technology and its application [M]. Beijing: Sinopec Press, 1996.

[5 ] Civil Aviation Administration of China Document [1994] No. 284, Regulations on the issuance of dynamic fixed-format telegrams for China’s civil aviation flights [S].1994.